Fracture energy of micro crystalline cellulose - Carbon nanotubes reinforced hybrid cementitious composites
In the present research, the influence of hybrid reinforcements, i.e. micro crystalline cellulose (MCC)-mul- ti-walled carbon nanotubes (MWCNTs) was investigated on the fracture energy of cementmatrix.The cemen- titious composites were developed by preparing dispersion of MCC-CNT in aqueous medium w...
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| Other Authors: | , , |
| Format: | conferencePaper |
| Language: | eng |
| Published: |
2018
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| Subjects: | |
| Online Access: | http://hdl.handle.net/1822/69160 |
| Country: | Portugal |
| Oai: | oai:repositorium.sdum.uminho.pt:1822/69160 |
| Summary: | In the present research, the influence of hybrid reinforcements, i.e. micro crystalline cellulose (MCC)-mul- ti-walled carbon nanotubes (MWCNTs) was investigated on the fracture energy of cementmatrix.The cemen- titious composites were developed by preparing dispersion of MCC-CNT in aqueous medium with the help of two differentsurfactants: cetyltrimethylammonium bromide (CTAB) and Pluronic F-127 and ultrasonic energy.The prepared aqueous suspensions of MCC-CNT were subsequently used to reinforce cement matrix and the fracture energy of reinforced composites was characterized. According to the experimental results, the fracture energy increased strongly (up to 85%) with the use of 0.5%MCC-0.3%CNT as reinforcements with respect to cement. The defoamer concentration has also played an important role in the fracture energy of cement composites. |
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